Finding the Fourth Proportional to 1,288,549.05, 1,778,148.98 and 715,626.14
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Solution
The fourth proportional to 1,288,549.05, 1,778,148.98 and 715,626.14 is: 987,537.01
Step by Step Solution
- Step 1: Write the proportion equation
1,288,549.05 : 1,778,148.98 = 715,626.14 : x - Step 2: Convert to fraction form
1,288,549.05/1,778,148.98 = 715,626.14/x - Step 3: Cross multiply
1,288,549.05x = 1,778,148.98 × 715,626.14 - Step 4: Simplify right side
1,288,549.05x = 1,272,489,878,433.46 - Step 5: Solve for x
x = 1,272,489,878,433.46/1,288,549.05 - Step 6: Final answer
x = 987,537.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.